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    2004 Escalade ESV Fuel Cap Issue

    I have thought about the OEM issue, and can't tell you if it is or not. That could be the answer. Or not. The cap has plastic "bevels" so that when you twist it clockwise until it clicks, it is supposed the get snugged up to the rubber O-ring gasket. It could be that I am not pushing it down...
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    2004 Escalade ESV Fuel Cap Issue

    Anyone else ever had problems with the fuel cap, it coming loose, and you get the "Tighten Fuel Cap" message in the DIY, a Check Engine Light, the the Evaporative System code. I'm a bit gun shy because I have replace it twice with two different caps, both which showed to be the right one, but...
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    '04 6.0L Escalade AC Compressor

    I believe it's because the vehicle is haunted. It's working fine now.
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    '04 6.0L Escalade AC Compressor

    As far as I'm concerned, it's working fine today. My wife is the one who reported the issue. But, that's today, and in a haunted vehicle. I would love to have an Escalade or Tahoe or Yukon where everything is not automated. Our 2000 Yukon was not, and always worked just fine, right up to the...
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    '04 6.0L Escalade AC Compressor

    Refrigerant level is fine. Checking it, trying to add some, is when I could tell the compressor was not kicking in. But, that doesn't mean there's not a leak. But, since you brought it up, it did have a leak a year ago, and I fixed it...
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    '04 6.0L Escalade AC Compressor

    It seems like the AC compressor is not kicking in. What should I be looking at? Thanks
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    Stability System Disabled/Engine Power Reduced

    Our mechanic went through everything and determined that it was the two sensors in the OEM throttle body he put on a year ago, when this happened then, that were not agreeing. So he put on another identical OEM throttle body, with sensors. He said he has not been able to get it to screw up. I...
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    Stability System Disabled/Engine Power Reduced

    I've been on Internet forums since soon after Al Gore opened the Internet, and I've always been amazed at how some people who have not experienced something have advice about it. Sorta like people who love their timeshares not being compassionate with those who want to get rid of them. I'm on...
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    Stability System Disabled/Engine Power Reduced

    This our third vehicle in the 2000-2006 Tahoe/Yukon/Escalade platform, totaling over 300,000 miles, so, you're right that most/many have not experienced the Reduced Engine Power GM feature. It's pretty much divided into those who have and those who have not yet. & I totally understand how...
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    Stability System Disabled/Engine Power Reduced

    Yet another DIY guesstimate/fix of a common GM issue: The fix du jour! My guy is going to the TAC module next probably. You know, lacking any guidance from GM and all!!!
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    Stability System Disabled/Engine Power Reduced

    I will stand by my thought that GM should be providing some guidance even more now that it is doing it again, the morning after it was fixed.
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    Stability System Disabled/Engine Power Reduced

    I stand by what I said, that GM should be involved in letting owners know what all can go wrong with their fly-by-wire, since it is so confusing, and, after all, it is their improvement to the pedal to throttle link. Just read all the threads on just this one forum and you can see GM owners...
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    Stability System Disabled/Engine Power Reduced

    I've figured this was something simple all along, something causing not-so-simple things, like pedals and sensors and throttle bodies to needlessly get replaced. &. I knew if I just took it to one of the repair shops available, it would be totally hit-and-miss, they would likely be influenced...
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    Stability System Disabled/Engine Power Reduced

    After reading some of the replies when I started this a year ago, it appears that "Reduced Engine Power" was not as common back then as it is now, or the first few who replied just were not aware of it. Now it's all over this and other forums.
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    Stability System Disabled/Engine Power Reduced

    Having wrestled with this problem for 15 months now, I'm 99.99999% certain it is not about what the throttle sensor codes suggest it is. It's about bad grounds in aging products, and it's something GM should be addressing. Hundreds of good vehicles are likely getting sold, or scrapped, by...
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    Stability System Disabled/Engine Power Reduced

    Here's another way another guy solved the problem. Again, it's all about grounds in an aging GM problem. His last line, "GM can't solve this, but you can."
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    Stability System Disabled/Engine Power Reduced

    OK, explain what you're showing. Is that before and after, or . . . . ???? My wife and I are frustrated beyond belief. I know it's something relatively simple, but don't know everything I need to look at, and there aren't any repair shops where we're at in the Winter that are willing to...
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    Stability System Disabled/Engine Power Reduced

    Here's an interesting analysis of a throttle position sensor, obviously something mere mortals would never see or know:
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    Stability System Disabled/Engine Power Reduced

    What harness? Pedal sensor? Throttle body? Other? I'm doing one thing at a time and still get codes and reduced engine power. Last Saturday my battery read "replace", when I don't think it actually was bad. I replaced it any way. We're afoot and it's everything I can do to keep my wife...
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    Stability System Disabled/Engine Power Reduced

    Wow!!! I have fighting this since December, 28, 2022, and I see the likely answer was posted by mdmcinti long ago. I have long suspected this is a grounding issue, and agree with mdmcinti that pedal position sensors and throttle position sensors are not the type of thing that goes bad. After...
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    Stability System Disabled/Engine Power Reduced

    It was 67 "posts", not pages!!!!!!!!
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    Stability System Disabled/Engine Power Reduced

    Thanks. I appreciate that video. I have read about bad grounds and wires both last year and now, but I have never seen what and where and someone fixing them. Since I have replaced the APS twice and the throttle body once, and that did not fix it, I have felt it was something else all along...
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    Stability System Disabled/Engine Power Reduced

    I took it around the block and the APS code came back, plus P1516, a new one. Reduced engine power, of course.
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    Stability System Disabled/Engine Power Reduced

    I'm not doing a Happy Dance yet, but I replaced the battery and the codes are gone.
  25. N

    Stability System Disabled/Engine Power Reduced

    Too late. I just replaced the pedal position sensor and it did not change anything. Last year I replaced the pedal position sensor and then put on a new OEM throttle body, with a new sensor attached. It did OK for a year. My guess it is one of the harnesses, or any of a lot of things. I...

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